For the orthographic projection as a map projection, see Orthographic projection in cartography. For mathematical discussion in terms of linear algebra, see Projection (linear algebra).
Bullfrogs are the largest real frog found in North America, weighing up to 0.5 kg and measuring 460 mm in length. Their average length is 100-175 mm. Their color varies from brownish to shades of green, often with spots or blotches of a darker color around their backs. Their back feet are fully webbed.
About the Quahog. Quahogs are hard-shelled clams found in estuaries along the Atlantic Coast, from Canada to Texas. Their name, quahog, is a variation of poquauhock, (po-qua-hock) the Native American name for this clam.n the seafood business, small quahogs are known as littlenecks; larger ones are called  cherrystones; and quahogs over four inches wide are called chowders.. Only large chowder quahogs have shells thick enough for making wampum. All sizes, however, make delicious chowder.